Drill-retriever



J. D. BRANDON.

DRILL RETBIEVER.

ATION FILED 1mm Patented Sept; 7,1920.

UNIT

Fries.

JARVIES DANIEL BRANDON, 0F LANCASTER, OHIO.

DRILL-REFIBIEVEB.

Application filed January 15, 1920. Serial No. 351,734.

To aid 207201722? may concern:

Be it known that I, JARVIES DANIEL BRAN- DON, a citizen of the UnitedStates, residing at Lancaste in the county of Fairfield and State oftain new and useful Improvements in Drill- Retrievers, of which thefollowing is a specification.

This invention relates to an improved drill retrieving tool, and has forits primary object to provide a substantial, reliable and effective toolfor the purpose of facilitating the removal of adrill from a boring orwell sliaftin a substantially automatic and positive manner.

In the art of well drilling, it frequently occurs that a drill willbecome accidentally released from engagement with its actuating andsupporting cable, in which event the drill drops to the bottom of thewell and if the latter is of a relatively con siderable' depth, it is amatter of considerable inconvenience and difliculty to successfully andeasily retrieve the lost drill, in asrnuch as thelatter is frequentlyembedded in the bottom of the well or shaft and its elevation isaccordingly rendered extremely difficult.

The present invention provides a tool which is of such construction asto be capable of being lowered into a well or shaft, and embodiesfeatures of grip upon the shank of a drill situated in the bottom of theshaft, whereby upon the elevation of the tool, saic in a tool or drillretriever of the aforesaid character which consists essentially of a'drill may be readily positioned within said bore. and the openings ofsaid ring members upon downward movement on part of the tool, however,upon the elevation of the tool said ring members will be anguhio, haveinvented cerconstruction which enables the tool to obtain a positivedrill will be automatically and firmly'locked thereto and its elevationquickly and easily performed,"

Another object of the invention resides larl-y disposed by engaging withthe in- ;clined walls of said sockets, thereby caus ingthe walls of saidring openings to frictionally engage with said drill in such manner thatthe latter will be securely, automatically and positively held withinthe tool during theelevation of the latter.

A further object ofthe invention resides in positioning said ringmembers so that the latter will assume angular positions with respect toeach other, thereby causing said drillto be centered within the body ofthe retriever and to relieve the latter of extensive stress upon any onepartthereof. Other ob eots of the invention reside in constructing thebody of said retriever in two parts'so that the internal members of the'tool' may berendere'd readily accessible and their OPGIMJIVQ positionssecurely maintained, in providing means forreadily connecting the toolto raising and lowering -mechanism, in securely connecting thetwo partsof the tool body together, and in zrorming said ring 'members so thatthe walls defining the openings thereof may be caused to exert amaximumgripping action upon an associated drill.

With these and otherobjects in View, as will appear as the descriptionproceeds, the invention accordingly consists in the novel features ofconstruction, combination of elements and arrangements of parts,hereinafter to be fully described andto have the scope thereof pointedout in the appended claims.

In the accompanying drawing, forrning a part of this specification, andin which simicorresponding parts:

Figure 1 is a sideelevation of the improved la-r characters of referencedenote like and drill retrieving tool comprising the'present invention.V

Fig. 2 is an enlarged elevation of half of the tool, the other halfbeing removed for the purpose of more clearly disclosing the interiorconstruction.

Fig; 3 is a similar view of the opposite or I removed half. a

Fig. tisa sectional View taken along the plane disclosed by the line 4 lof 2,

both halvesof the tool body, however,be- 'ing shown in assembledrelationship.

Fig. 5 is a similar view taken'along the plane disclosed by the line 55of Fig 2,

and,

Fig, 6 ma fragmentarysectional View taken through one of the ring orwasher members. 7 s

Referring more particularly to the details of construction of thepreferred formof the improved drill retrieving tool comprising thepresent invention, the numeral 1 designates the tool in its entirety. Asshown, this tool consists of a body portion of elongated cylindricalformation which maybe formed from any suitable material. Preferably,

, the body of said tool is formed to include a pair of separablesections, which are indi- V cated by the numerals 2 and 3. Each of thesections is provided with an elongated semi circular groove 1, wherebywhen the sections are assembled, said grooves will register to provide alongitudinally extending here within the tube, which bore is adapted toreceive the shank end 5 of a drill or other similar device which a-tool1 is adapted to' retrieve. V V

' To hold the sections together in a positive and rigid manner, the mainsection 2 is provided with a plurality of offset ribs 6, be-

tween which grooves are provided for the recept on of t n ues 7 providedupon the auxiliary section 3. By this construction it will be obviousthat relative longitudinal movement between the sections will beeffectively precluded. Further, the upper and lower ends of the sections2 and 8 are provided with registering transversely extending openings 8which are adapted to receive holding screws orthe like 9, which act toretain said sections in their assembled con: dition and preserve theholding arrangement of theriband tongue construction 6 and 7.

The upper end of the tool is provided with af reduced threaded stud 10,which may be threaded into a socketformedin acable carryingmember 11,the latter being indicated by dottedlines in Fig. 1.' I By attaching thetool to the member 11, the operation ofthe former may be convenientlycontrolled, as it will be apparent that the tool may be raised orlowered within a well or shaft. Wrench receiving surfaces 12 are alsoprovided upon the'upper end of the tool for the purpose of 1facilitating theinsertion of the stud. 10 into i. 50

the socket of the holding member.

Rererring now to the more essential features of the invention, it willbe observed upon reference to Figs. 2 and 3, that each of the sections 2and 3 is provided with a plu ralityofring receiving sockets 13, whichare j adapted to register when the sections are in their assembledform." These sockets are adapted to transversely intersectthe drillreceiving bore and the'axis of said bore is common to the sockets 13. Itwill be ob-,

served that said sockets are formed with fiat horizontalv walls 14 whichare disposed on the plane at right angles to the axis ofthe drillbore,and that the oppositewalls of said 7 sockets are relatively inclined asshown at ing of the tool other,

15. These sockets are adapted to receive a plurality of ring or washermembers 16, which are provided with central drill receiving openings 17,said openings being disposed to aline or register with the drill bore.In operation, a drill which becomes broken or disengaged from itsactuating cable and falls to the bottom of a well or shaft, may

be retrieved by thelowering of the tool 1 into said shaft. It will beobserved that the lower end of the bore iswidenedor flared as at 18 inorder that the shank end 5 0f the drill will be caused to pass into saidbore upon the lowering of the tool 1. It has been found that by soflaring the'open end of the bore, very little difficulty is encounteredin the positioning of the drill within said bore, and this properpositioning of'the drill may be determined by the arresting of thedownward movement on the part of'the tool 1. The openings 17 are also ofsuchdiameter as to'permit the drill 5 to readily pass therethrough, andfurthermore upon the lowering of the tool '1, said washers will beforced against the flat walls 1 1 of'the sockets 13, therebypermittingthe drill to pass therethrough without encountering unduefriction. Now, upon the raisit will be manifest that said drill willtend 1 so as to elevate the drill 5,

to escape or pass out of the tool bore. 'QThis action, however, isprevented by the washers or ring members 16, which assume therelatively, angularpositionsshown on account of the inclined walls 15 ofthe sockets'lfj. This inclination of the washers causesthe opening wallsof the latter to frictionally engage with the sides of the drill 5 sothat the release of the latter from; engagement with the tool ispositively prevented during the upwardmovement of said tool. Thearrangement of the washers is such that their gripping pressure willincrease in direct ratio to the weight or resistance offered by thedrill duringelevation of the tool 1. 7 It will thus be manifest that'themere, lowering of the tool 1 will cause the drill 5 to enter thereception bore formed inthe' tool, 7 and that said drill will be firmlylocked in; r

position for upward movement by the peculiarv arrangement andconstructlon of'the members 16; Furthermore, by causing the washermembers to assume the relatively rib and tongue construction, securityis ob tainedlin assembling of the sections; The

tool is substantially automatic in operation and therefore requires buta minimum amount of manual attention in eifecting its functions.

What is claimed is:

l. A drill retriever comprising a: body portion having a longitudinallyextending open ended bore formed therein, said bore being longitudinallyintersected by a plurality of ring sockets, and a plurality of angularlydisposed clamping rings loosely positioned in said sockets and situatedsubstantially in alinernent with said bore, whereby said rings will beenabled to frictionally grip and retain the shank of a tool positionedwithin said bore.

2. A drill retriever comprising a body portion having a longitudinallyextending open ended bore formed therein, said bore being longitudinallyintersected by a plurality of ring sockets, each of said socketscomprising a substantially flat upper wall and an angularly disposedlower wall, and a plurality of relatively angularly disposed clampingrings loosely positioned within said sockets and situated substantiallyin alinement with said bore, whereby when a drill is forced into saidbore, said rings will be pressed toward the upper flat walls of saidsockets, and upon upward movement on the part of said retriever, saidrings will lie contiguous to the lower inclined walls, thereby obtaininga frictional grip upon said drill.

3. A drill retriever comprising a body portion formed to include aplurality of separable complemental sections, said sections beingprovided with registering grooves constituting a drill receiving bore,said bore being longitudinally intersected by a plurality of registeringring sockets formed in said sections, and a plurality of relativelyangularly disposed clamping rings loosely positioned within said socketsand operative upon the raising of said retriever to fric tionally grip adrill positioned within said bore.

In testimony whereof I aliiX my signature.

JARVIES DANIEL BRANDON.

